Yosan Private High School's homeroom teacher is injured, so a substitute is called in. Han Bong-Gu (Uhm Ki-Joon) is a mysterious man, and after a series of bizarre happenings, class president Ye-Rim (Kim So-Hyun) attempts to solve the riddle.
Read full
Yosan Private High School's homeroom teacher is injured, so a substitute is called in. Han Bong-Gu (Uhm Ki-Joon) is a mysterious man, and after a series of bizarre happenings, class president Ye-Rim (Kim So-Hyun) attempts to solve the riddle.
Discussion